Wider Tyres, Dry Weather Lube & Noisy Free Hubs

Wider Tyres, Dry Weather Lube & Noisy Free Hubs | GCN Tech Clinic

Рет қаралды 35,265

Күн бұрын

Is there an aero penalty on wider tyres? Is there a correct tyre choice for climbing? Are there options for using tubeless sealants without natural latex? Has your wheel hub got louder and should you upgrade your groupset or buy a new bike? Alex & Ollie are here to answer your latest Tech Clinic questions!
Welcome 0:00
Aero penalty on wider tires? 0:20
Best tires for climbing 2:44
Best drip on wax for dry conditions? 4:28
Tubeless sealant without natural latex? 5:32
My wheel hub has got louder? 6:43
Do wider tires last longer? 7:32
New bike or upgrade groupset?
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Пікірлер: 197

@gcntech 2 ай бұрын

Drop your tech questions below using #askgcntech⚙

@HamRadio200 2 ай бұрын

#askgcntech do the TPU and latex tubes suffer from rotting when not in use like traditional rubber tubes?

@bike2452 Ай бұрын

#askgcntech I got some sticky race gel in my DI2 shifters. Any tips or tricks for cleaning sticky electronic shifters?

@AndyC233 Ай бұрын

Hi guys, great video as always. I wanted to know, is a grease a grease a grease? Should I be applying different products to different components, e.g. bearings, screws, skewers/thru-axles etc, or are they all pretty much the same product? I have some Fenwicks assembly grease, but I don't know if this is suitable for all jobs, or if I should be using different products for different jobs. Thanks!

@space.youtube 2 ай бұрын

To treat symptoms of latex allergy, apply TPU tube liberally.

@Jalfred92 2 ай бұрын

I'm back on vittoria latex after so many failed/slow leak TPUs. Way more reliable, and whats a pump or two before going out anyway?

@Jalfred92 2 ай бұрын

Just got to that part of the video, didn't know you meant a real allergy! 😂

@veganpotterthevegan 2 ай бұрын

@@Jalfred92 latex leaks significantly every day under the best conditions

@Jalfred92 2 ай бұрын

@veganpotterthevegan i find about 2.5psi overnight which is very manageable!

@dainiusvysniauskas2049 2 ай бұрын

@@Jalfred92 Back when I was using Michelin latex tubes, they would drop significant amount of air in 8 hours. Like going from 80 PSI to 65 or so in 26mm width.

@treyquattro 2 ай бұрын

I'm using the "gateway drug" of Silca Super Secret drip-on wax. Only the other day I was importuned on the street by a shady character trying to entice me with the hard stuff (a baggie of wax pellets). It's a slippery slope. Well lubricated, you could say.

@frodo5882 2 ай бұрын

I never understood how many chains you can wax with one bag. Or is it just one? Because then it's so expensive.

@treyquattro 2 ай бұрын

@@frodo5882 you can re-use the wax many times, for the same chain or different chains. I don't know what the upper limit is (maybe it says on the bag?) Agreed that - like everything in cycling it seems - it is expensive. A chain is stupidly expensive when you consider that it's probably knocked out of Chinese factories for less than a quid/dollar/euro, and they don't last more than a few thousand miles, unless you wax them (allegedly).

@glenni249 2 ай бұрын

@@frodo5882a bag will last ages. I got a different brand when I bought wax (can't remember which one), so it was big pucks, not pellets, but the wax has been sitting in a slow cooker for a good while now and has waxed and rewaxed my chains multiple times. I've got a rotation of 4 chains for 2 bikes.

@marksticky0688 2 ай бұрын

You can wax a load of chains per bag. Only a small amount of the wax transfers to the chain, the rest stays in the pot and can be used over and over again.

@frodo5882 2 ай бұрын

@@marksticky0688 Thank you! And you just leave it in the pot until you use it again? Isn't it going to get dirty from dust? Or maybe contaminated over time because it takes in the metal from the pot? And since you're so kind another question: The missing link is officially not reusable. So you buy new ones all the time?

@user-np5dh8cu9p 2 ай бұрын

Whenever there is a new GCN Tech video, I always set aside the allotted time to watch.

@dubtechbrotherstv5744 2 ай бұрын

Nice tire discussion! I’m in love with your nerd talk ❤

@gcntech 2 ай бұрын

Nerd chat is our favourite thing 🙌

@michaeljohnston6898 2 ай бұрын

Hi Ollie. You were correct first when you said weight as pressure is force/area. Weight is a force (mass × acceleration due to gravity). Very interesting discussion, however; please do make a video about it!

@ghowell13 2 ай бұрын

On the point of the tire wear and pressure exerted, I've had a very similar experience in a *real-world" application. Caterpillar created a bulldozer with the suffix designation LPG, standing for Low Ground Pressure. (The one we had was a D5LPG vs a D5H. Both were "high tracks"). The tracks are optimized to exert the minimal amount of pressure possibel for the equipment, without changing anything else, except the tracks. The 5LPG vs the 5H track size is almost double in width, if I remeber correctly, for the LPG That piece of equipment could walk across a bog, swamp, wetland, silt pond-- right over the top of it, and not sink, where the other one, just the same, save the tracks, would sink up to the engine, over the tracks, and have to be winched out. It was amazing.

@jameslee-pevenhull5087 2 ай бұрын

The whole weight of the vehicle is shared over the square inch footprint of the tyres or tracks. A 180 lb rider and bike has approx 95 lb on the rear and 85 lb on the front. 95 psi in the rear tyre gives 1 sq in of contact. 85 psi in the front gives a 1 sq in contact. The larger the contact area requires more tyre wall deformation to achieve. It takes energy to deform stuff. The energy finishes as heat.

@KelvinSuddith 2 ай бұрын

@@jameslee-pevenhull5087 or, get this, you run the large tires at a lower pressure… You missed half the point of the discussion that large tires provide, mainly being able to be run at lower pressures.

@craesh 2 ай бұрын

9:20 that's the actual definition of pressure. Force per area. Car tyres usually have a pressure of about 2 to 3 Bar. Even a Porsche's tyre. Bike tyres... you know your tyre pressure 😉 The higher the pressure, the more the same force (=weight) will be concentrated on a smaller area.

@cb6866 2 ай бұрын

Thanks Alex , and Dr O , and crew.

@marksheeran1717 2 ай бұрын

Thanks guys, and the tyre pressure analysis that Ollie was taking about was fascinating, and once pointed out it does make sense.

@nerigarcia7116 2 ай бұрын

I've gone to 30 and 32 tires on my road setups and I'm just as fast as when I was on 26-28, because I'm not that fast. The difference is microscopic, if not the same, and the ride is much more smooth. So, I don't get to the cafe 5 seconds faster. Who cares!

@jepulis6674 Ай бұрын

Its just a shame to swap bike for just wider tyres. Such a waste. I guess one could try a 650b conversion with very long reach brakes.

@randomsorts Ай бұрын

@@jepulis6674same bike, wider tires

@mnbv5555cxz 2 ай бұрын

Best content of the GCN family!

@gcntech 2 ай бұрын

Whoop whoop we love this! The tech clinc is the community spot 🙌

@apuldram 2 ай бұрын

Need to match the tyre to the rim, as well as the bike geometry. Riding a too wider tyre on a narrow rim, is like riding with a slow puncture.

@gcntech 2 ай бұрын

Great point! It can feel super soft 👀

@alugo9032 2 ай бұрын

Not advocating for longer videos, but Ollie’s technical rabbit hole diving makes this much better; so, let the man ramble.

@SteveNinetyski Ай бұрын

Gay

@MardenGimenes 2 ай бұрын

I love this channel and the possibility of watching the videos translated into my language, so I understand everything they say.

@gcntech 2 ай бұрын

thanks! 🫶

@TB41n0 2 ай бұрын

Big steve from Doncaster riding the alps this afternoon starting in Skipton

@larrylem3582 2 ай бұрын

Not only is running a bigger tire in the back going to change your geometry, it's also going to increase your gearing! hahaha

@zedtony8110 2 ай бұрын

Definitely change the gearing. No one ever mentions this so the bigger the tyers the bigger the cassette.

@harleypurcell7766 2 ай бұрын

Good show lads

@gcntech 2 ай бұрын

Thanks Harry! We love the community questions 🙌

@zedtony8110 2 ай бұрын

I've gone from 32mm to 28mm and now to 25mm tyres because I don't like the feel of the wider tyres on turns. They feel wrong and a little unsafe, where the thiner the tyre the better the feel.

@stevenjoyce421 2 ай бұрын

This obsession with wider tyres is getting a bit much. Almost like industry wants us to run out and get new tyres

@goodeggnogg7038 2 ай бұрын

Absolutely! You don't want to be riding on too much rubber...you lose that responsivness and sensitivity of a good 25-28mm!

@bbnd5476 Ай бұрын

What do you mean? We have to replace tires regularly anyway....

@ltrtg13 2 ай бұрын

I use Peaty's tubeless sealent on my mountain bikes. I will also use it on my hybrid as well. There is no latex and it seals punture well.

@bleckb Ай бұрын

If you can afford electronic shifting, I would go for it. It’s an expensive upgrade but worth the added pleasure of faultless shifting.

@triathlonsteve9675 2 ай бұрын

#gcntech , hi guys great show, you and Dave have so much knowledge; question I use a Durace wax chain on my tri race bike, it only gets used for three or four 90km bike sections each year, rest of time is in garage covered up, should I rewax chain, before race season starts, as bike has not been used for over six months? Thanks 😁

@kalijasin 2 ай бұрын

I have same experience as Alex.

@jameslee-pevenhull5087 2 ай бұрын

At 3:30, the truth outs. Light, slim and high pressure has LOWER rolling resistance.

@rob-c. 2 ай бұрын

Did they mention the pressure and width?

@DanTuber 2 ай бұрын

Alex just ignoring someone calling him Armando 😂

@kennethlinton4432 2 ай бұрын

He's a bit short on insight, always talking over Ollie.

@jeffreylee5770 2 ай бұрын

Hi Alex and Ollie, Thanks for the great work : ) I have a question about the Strava app malfunctioning wildly. For example, last week I did a 10 mile ride (according to a simple wired bike computer that measures wheel revolutions), but the Strava app said I had covered 763 miles in 35 minutes, and the path included very straight lines across great distances over the wide open Atlantic. I'd have had to have been riding at greater than Mach 1 over deep ocean. On the plus side, it would have been my longest distance ride. On the negative side, I had to delete the erroneous data. I see less extreme examples of weird data pretty regularly, sometimes an extra 10 or 20 or 30 miles will appear, usually with more strange very straight lines that do not match any roads anywhere. Do you know what could be going wrong?

@atmatt 2 ай бұрын

WTB TCS Tubeless Sealant is synthetic latex. I believe they even list it as latex allergy friendly.

@OldDavo1950 2 ай бұрын

#askgcntech Coming from the old days when you could mix and match anything to anything. Question is with Shimano are all the different models cross compatable. eg 105, GRX, Ultegra. specifically 11sp in my case. And will the Shimano 11sp cassette freehub fit a Campag zonda rear wheel. Still running rim brakes on a 10yr old carbon Ribble. And the Shimano parts be compatable with the Chorus 50 34 crankset. Main reason is to build new running gear for next years Peaks Challenge here in Australia. Need a 11sp cassette with a 36t for its lowest gear. Just trying to change specific things in the most cost effective manor. And find that Campag has lost its way a bit on parts and compatability. Thanks for any advice.

@aneirin1234 2 ай бұрын

Hi guys, I'm looking to wax my chain for the first time and I read up on some of the benefits including it keeps the chain cleaner for longer. If this is the case, is there an option to also wax jockey wheels? TIA

@smithpauld1501 2 ай бұрын

On the contact patch issue, would the lower pressure associated with the wider tire lengthen the patch as well as widen it? Intuitively, there seems to be a double benefit.

@TouringTony 2 ай бұрын

@askgcntech Just a quick update. Last week I sent a question because after 120km my tyre had started coming off the rim. A friend suggested dropping the pressure a tad because the inner tube expands due to heat from friction increasing the volume to increase which pushes out the tyre (think i got that right). I did that and have since ridden 102 and 140km plus shorter rides without issue.

@fennec13 2 ай бұрын

I roll 32 on the road - 45mm on gravel. and 32 is the lowest i'd go - lol - idk who thinks they need to be aero - and also that pros are using wider and wider tires anyway ? is this still a legit thing people haven't heard about ?

@petersouthernboy6327 2 ай бұрын

On gravel, everybody’s going wider. I went 47mm Pathfinder Pro’s on my Revolt and they roll fine on asphalt as well.

@StayZero556 2 ай бұрын

I run 700x55 (Continental Contact) and I love them but I’m also a heavier rider and I don’t care about aero or any of that stuff. It’s all about comfort for me.

@crypto_que 2 ай бұрын

Narrow 28c tires are slowing the peloton down. Tires will continue to get even wider. Chainrings have gotten larger & cycling has gotten faster. The weakest link is having to go so slow in corners because of lack of contact patch. Motorcycles have pretty wide tires for cornering upwards of 100mph and bike tires will certainly evolve to be much wider.

@mvm9407 2 ай бұрын

You are, of course, aware that motorcycles have engines?...

@SteveNinetyski Ай бұрын

What a ming mong. F1 cars corner at 160mph..what is your point?

@Gabizzle3 2 ай бұрын

#AskGCNTech Thank you to the team for all the advice over the years! I am a heavier rider (around 95 kg) and finally got a bike fit. The fit itself went well, with my flexibility, I am lower on the front end than I ever imagined! My question is my saddle is tilted with the front half level with the ground and I still tend to experience perineum numbness after 15 minutes fully seated on my indoor trainer with my hands on the hoods. Is this more down to having excess weight why I cannot be on the saddle for a more extensive period of time, or could the saddle not suit my sitbones? Should I be out of the saddle by nature every so often, anyway? The bike fit was quite a drastic change that may take more time to get used to, just wondering what you all make of this. Thank you!

@___Bebo___ 2 ай бұрын

Angle the saddle downwards to the nose pointing 1% off level and try again. Try to perch on your sit bones with none of your meat touching the saddle. Try to put the sit bones on the widest part of the saddle.

@nebulous962 2 ай бұрын

0:30 if you are considering wider tires because of comfort then they might actually also be faster because when your body is constantly moving up and down because you don't have big enough tires that also slows you down alot because it ofcourse takes energy to move body up and down and that same energy could be used to move you forward instead. if you have ever gone to gym you know exactly how much energy it takes to move like 60-70kg of weight up and down constantly. it's alot.

@user-rk3mj9uw4l 2 ай бұрын

#askgcntech, sealant in inner tubes; hack or bodge? Double protection against punctures, paying some extra weight.

@owensnicholas Ай бұрын

#askgcntech I’m a bit perplexed. I just did the same ride that I did a few weeks ago. It’s about five hours, 70mi, and nearly 8000ft of climbing. This time I did the ride at an average of 20w higher than last time, but I was only 4min faster despite it being warmer and in the dry (the first ride was cold and wet). I’ve checked my wheel bearings and bottom bracket, all of which seem to be fine. My chain is freshly waxed. What could be sapping my precious few watts? My tires are about a year old. Could they have degraded that much that they’re holding me back by tens of watts?

@feedbackzaloop 2 ай бұрын

Regarding wear rates, what tyres gain in lesser pressure in the contact patch they lose in greater leverage across the contact patch. So the main reason for wider tyres to have less wear is rather simply having more compound to begin with.

@CharlotteClaydon-ux6gm 2 ай бұрын

Hey, slightly broad question but I’m looking at getting myself a new bike this year (the hand me down is too big but has been fun for 5 years) is it worth getting a bike got done before buying to hell with sizing? Also any recommendations for new bike for endurance road (I have no hills where I live) in the £4-£8k range? Love the show as always

@rickmorse3351 2 ай бұрын

absolutely get a fit done before you buy the bike, that way you'll be sure to get correct frame size for you. All the rest you can modify.. Also you will probably want to order specific handlebar width as well as crank length, which may not come standard on many full bikes... Lots of endurance bikes to choose from in the price range you mention. Canyon, Giant are two that I'd say to look at, but many, many others as well.

@dexmcluskey4832 Ай бұрын

#ASKGCNTECH Hi, GCN Tech peeps. I use a Wahoo Kickr V5 with Zwift over winter, as it’s often too snowy at 7,500 feet elevation here in the Colorado Rockies to ride outside. In preparation for spring, I recently got a 4iiii Precision 3+ single side power meter (on a GRX 800 crank) and paired it with a Wahoo Elemnt Roam V2. I was surprised to see that the 4iiii registered significantly higher watts than the Kickr trainer, so I set the scale factor on the crank power meter to 0.781 and now it produces readings in line with the Kickr. But is the 4iiii really recording watts 20% higher than the Kickr? Should I keep this scale factor when I start riding outside again? And how do I know which, between the Kickr and 4iiii, is accurate - if either? Thanks for your advice.

@dougpence3862 2 ай бұрын

When will we see rear time trial solid disc wheels hookless with 28+ mm tires?

@gcntech 2 ай бұрын

Oooo interesting... do you think this tech is coming?

@wspmjw 2 ай бұрын

Is the UK ever dry for extended periods?

@johnlaker5905 2 ай бұрын

#askgcntech Hi guys, I live at 900m elevation. When I try to use the silca tyre pressure calculator it recommends that I use say 75psi but when I inflated my tyres it go to max, 60psi. How much does altitude effect tyre pressure and should I just ignore these online calculators? Looking forward to your answer, John

@padmanabhaprasannasimha5385 2 ай бұрын

I think you need a different pump or a different pressure gauge.

@johnlaker5905 2 ай бұрын

@@padmanabhaprasannasimha5385 I use the Topeak Smart gauge D2, from reviews I've read it's pretty accurate

@ariffau Ай бұрын

Serious question here 0:34 who is Armando? I am pretty sure it’s Armadillo.

@neilmdon 2 ай бұрын

Contact patch -- IT IS ALL ABOUT PRESSURE! The pressure in a (road) bike tire (tyre...) is about twice the pressure in a car tire, so the pressure on the ground - or your foot - is the same. The system weight determines the contact patch. So, if my system weight is 160 #, or about 80# per wheel, and I have 80 psi (ok, Silca says 72 in the rear for my GP5000 measuring out at 29 mm) then my contact patch is 1 square inch. Full stop. The casing's ability to transfer load in compression is essentially nil (ergo riding on flats sucks). I actually started to go for "wide" (as in 25) tires about a decade ago as I was starting to get serious about the Pittsburgh Dirty Dozen and was trying on 23 mm Gatorskins and coming off whenever it was slippy and 30 % grade. Nevermind that Gatorskins have horrible grip, and changing to high quality tires of any width was a major help, I also figured that a wider tire would have a *wider* contact patch even at the same pressure - more or less a rectangle perpendicular to the bike rather than parallel to it with a stupidly thin track tire. So, at least my reasoning went, if I rolled over some oil or other road lubricants, I would have a better chance that at least part of my tire would find some grip, as opposed to all of my contact patch rolling over the exact same drop of lube. Does that make sense? The top of Logan St (Hill 4) is shockingly steep, narrow, has (had) a horrible broken surface, and old cars parked on the right hand side. When it rained you could literally see the oil slicks on the road. I learned quickly (and painfully) to stay left on Logan. (I never have been that good at unclipping on steeps - like that double unclip Ollie once described on Hardknott, which thankfully I encountered on a dry FW in 2019). I also once went up Boustead ("the one that hurts" - just after more famous Canton) immediately behind a delivery van that was literally streaming oil. That was a week before race day, and did I ever know where that slick line was and where to avoid. Carnage. So yea, the question is "Does lower pressure on a wider tire, and thus a WIDE contact patch give better overall grip?"

@AlexGNR 2 ай бұрын

Quick question. I am ordering the all-new Canyon Grizl 5 AL tonight. It has a 2by set-up and is gonna be a frame size large (as I am very tall and large; 185cm is a very good fit). However, since it comes with 40mm "Continental Terra Trail ProTection SL 40-584" tyres I was wondering, how well would these last in a city say like the typical Dutch student cities. So good roads for the most part but also some cobbled old roads in the centre). As I will be using it both there and off-road in the forest environments in the dunes across the western coastline of the country I want to be sure they are good for both asphalt and off-road. I was/am highly considering buying Schwalbe G ONE R 40mm tyres as an additional set/replacement set as they would potentially suit the environment I cycle in better. But yeah, how good are these tyres? And could you perhaps make a tutorial on how to make your tyres tubeless one day? Would be a great addition for the beginner (road) cyclist. Cheers!

@___Bebo___ 2 ай бұрын

Those tires have Continental Black Chili rubber which is pretty much the best rubber on the market unless you are talking graphene road tires, which are not appropriate for the type of riding you described. I would for sure not replace those no matter what.

@daveeaslick8686 2 ай бұрын

#askGCNtech I have an older ULTEGRA rear shifter (circa 2007) on our Cannondale tandem that sometimes skips as I'm shifting. As in, it doesn't click and change the gear, I might have to click it 2 or 3 times to get it to shift. Can shifters be repaired, or do they have to be replaced? It's too complicated for me to take apart. Any suggestions? Thank you.

@richardburgess5865 2 ай бұрын

#askgcntech. Hi Rupert, Sir Ollie and the team. I have what might be some silly questions about wheels. Do all wheels with through hub axles fit all model bikes, ie do Campagnolo wheels fit a BMC or a Merida etc? Also, when looking on web sites how will I know if a set of wheels are suitable for 11 or 12 speed groupsets, are they universal? Being a slow rider (I’m old and have some health concerns) I still run into hills so I’d prefer lightweight over aero and should I aim for steel bearings? TIA and keep up the good work!

@stevegeek 2 ай бұрын

Thru-axle wheels will be compatible if they have the same dimensions. Typically rear wheel is 12 / 142 mm and front wheel is 12 / 100 mm (where 12 mm is the axle diameter and 142 or 100 mm is the width, end cap to end cap). There are other dimensions so you need to check what you have. Rear wheels may or may not be compatible with 10, 11 or 12 speed group sets…you need to check. Some come with spacers to go on hub to convert to different speeds or you may need to buy them separately.

@yonglingng5640 2 ай бұрын

Steel bearings are totally fine. Ceramic bearings wear out the bearing races faster because the ceramic balls are harder than the steel races.

@peibol24 2 ай бұрын

#askgcntech Hi guys. I noticed my pulley wheels were dragging a bit so I serviced them. Once they were completely clean inside (I mean no grease whatsoever) they spin super quick and easy. I applied some grease and immediately they felt like they were dragging again. Is that normal? Should I use thinner grease? Thanks.

@yonglingng5640 2 ай бұрын

If you overpack the bearings, they do feel slower, but you get maximum protection against the elements. You can experiment with thinner grease with a lower percentage fill.

@giordanomcleod4046 2 ай бұрын

Hi Olie and Alex, I currently have a Dura Ace 9100 mechanical group set and am thinking of switching over to Di2. In your opinion, is it worth downgrading to Ultegra Di2 for better shifting performance, or staying with Dura Ace for weight gains and bragging rights. P.S. love the show, been watching GCN for 5 years now, you guys made me passionate about biking! #AskGCNTech

@sherab2078 2 ай бұрын

#askgcntech I have Kross Esker 2.0 MS from 2023. Microshift Advent X group set and Tektro mechanical disc brakes. I bought Challenge Getaway tyres, a 40 mm wide, foldable version. This was a mistake. I can't fit them together with the (TPU) tubes on the original rims - the tyres are too tight. What wheels from DT Swiss would you suggest buying to resolve this issue (I'm considering switching to riding tubeless)? I'm afraid of buying something incompatible with my drivetrain and disc brakes. I know you may not be allowed to give such a direct answer, but maybe some general guidelines at least?

@jonnyschlegcycling 2 ай бұрын

#ASKGCNTECH Hi Ollie and Wilford, I am getting ready to buy a new set of Elite wheels for my Canyon Ultimate. I noticed that their road wheels in the Drive model are an internal rim width of 21 mm, with an external rim width of about 28 mm. But their gravel wheels have an internal rim width of 24 mm, with an external rim width of 31 mm. The weight penalty for their gravel wheel set is only about 60 g for the pair. I should note that I only ride on paved roads. But I am drawn to the wider rim width, and would like to run 30 mm tires. Which wheelset would you recommend? Thanks!

@GCNalex 2 ай бұрын

I asked this exact question to Elite Wheels a few weeks back because i wondered the same. The answer is both would work fine. I would suggest if you are set on 30mm tyres (which i think are a good choice), the wider Internal rim would be more suitable. The Drive road is optimised for 26-28mm tyres. I am yet to try the gravel Drive on my road setup yet, but plan to soon.

@pej0s 2 ай бұрын

0:55 yes, you are paranoid. The difference in the size of a 28 and 32 mm tire is theoretically 4 mm, and practically the 32 mm tire has a greater deflection, so depending on the pressure it will be closer to 2 mm. With a bicycle wheel spacing of 1000 mm, the angle will change by less than 0.2 degrees

@MisterE331 2 ай бұрын

#askgcntech...Whats up guys and Manon love all the shows....I am considering upgrading to an electronic group set but I also venture on yearly bike packing trips (none of this camping out business only hotel to hotel)...Would you consider a mechanical or electronic group set for bike packing purposes in case of something going wrong or this is me making something out of nothing?

@lissaboileau Ай бұрын

I’d like to know the answer to this too #askgcntech

@joshebrown2575 2 ай бұрын

I know there has been discussion about this in the past, but this is about chain wax. I live in the Pacific Northwest in the USA, very similar if not exactly like the weather in the UK, only with less castles and a few more mountains. What does each GCN presenter use for chain lube? I know that Josh Poertner said, in an interview with Alex & Ollie, he uses wax year round, but can we get an answer from the whole crew?

@sherab2078 2 ай бұрын

#askgcntech Wide tyres vs narrow tyres and wear rate - part two. Isn't this like that, when you inflate both tyres to 'proper' pressures for each of them, the actual area of the ground contact patch will be the same and only its shape will be different? Isn't this a reason why both tyres roll exactly the same on a perfectly smooth surface? Hence, does the wider tyre rally is supposed to have a lower wear rate?

@aerobelly 2 ай бұрын

Are deeper section wheels ALWAYS more aero the deeper they get? At what depth does the trade-off between aero gains and weight penalty come into play? Is there a benefit to a mixed depth setup?

@rob-c. 2 ай бұрын

Yes, which is why disc wheels exist 🙂

@yonglingng5640 2 ай бұрын

Staggered setups not only bring the weight down a little, it also helps with crosswind stability. For example, 40 mm front and 50 mm rear. Some 50 mm rims don't feel stable when used as a front wheel except something like DT Swiss' ARC lineup.

@felipeaguila3039 2 ай бұрын

#askgcntech I think it is well-established that dry lube is kind of bad, but what about using wet lube for dry conditions? I have been using wet lube even when is dry, taking "extreme" precautions: applying it at least 5 hours before the ride, removing any excess from the chain a couple of hours after the application, and doing it again (cleaning the chain) after riding... mostly after the first ride. What are your thoughts on using wet lube in dry conditions? From my experience it lasts longer than dry lube, feels smoother, and with proper precautions is not that dirty.

@petersouthernboy6327 2 ай бұрын

I change out my chain every season, so I don’t obsess about wet or dry or whatever. If I use a wet lube, I dry off the chain with a cloth.

@pcat007 2 ай бұрын

no mics for you, guys?

@wspmjw 2 ай бұрын

#askgcntech Tech Presenters, which has a greater effect on crosswinds, size of tires, or the surface area of deeper dish (40mm+) wheels? Thanks.

@moonaxolotl1794 2 ай бұрын

#askgcntech hi GCN, could you please do a review of Deda Elementi RS4DB wheel-set? I understand these are really good. Your review would be very helpful. Thanks

@TheDavoWade 2 ай бұрын

Hey team. Any ideas to treat a smelly (bicycle) helmet? Mine is under 12 months old, I regularly remove and wash the pads and wipe the straps etc, but the southern hemisphere summer has left it with the smell of perspiration. Understandably you need to be careful with chemicals so you don't jeopardise the safety of the helmet, but any other tips to freshen things up? #askgcntech

@TheMilosDjuric Ай бұрын

#askgcntech Hello GCN, has anyone ever tried balancing the wheels (not geometrically but dynamically) with balance beads? Tubeless sealant maybe doing this as well, but I don't know if anyone ever examined this effect. I know this kind of balancing is not crucial for bicycles, but it does have an effect, especially at higher speeds.

@TheSpacecraftX 2 ай бұрын

Is this "dry conditions in the UK" in the room with us right now?

@wspmjw 2 ай бұрын

Beat advice I've received, don't replace new (1yr old, chain aside is new) with new.

@a1yallop 2 ай бұрын

Have you not seen Hambini Ollie and whatsisface ! Of course wide tyres are less aero.

@TwoTroutCreations Ай бұрын

#askgcntech Love the show, it's helped me loads. I'm asking for help to figure out a quirk of mine. When I ride I get a lot of snot in my nose for the first 60-90min. More if it's cool outside or I'm doing a tempo ride. It's quite annoying and distracts my breathing. What's the science going on here?

@Noddingdog63 2 ай бұрын

I loved my DT Swiss wheelset and as you say Olli yes you can maintain hubs BUT on the 370 hubs you have to remove the rachet ring to get the bearings out....bwhahahahah! I tried with tools, extension bar, heat , 2 bike shops tried and no joy. Sorry but I needed to change the bearing and DT Swiss have made a bit of a faux pa on this one. In the end I had to sell wheelset...gutted!

@petersouthernboy6327 2 ай бұрын

Yeah, the 370’s are a pariah. The 350’s are easy peasy.

@Noddingdog63 2 ай бұрын

@@petersouthernboy6327Well I was under the impression that the 350's were just as bad.

@petersouthernboy6327 2 ай бұрын

@@Noddingdog63 oh no, very very different hub. I’ve been running DT350’s for decades and they are superb. Very easy hubs to service and overhaul with hand tools.

@Noddingdog63 2 ай бұрын

@@petersouthernboy6327That's good to hear. 370's are good to service apart from the "you know what".I now have Bitex hubs which , I think, are better hubs on H Plus Son Hydra rims. Not that well known but wheel builders seem to like them.

@anthonykinneen8443 2 ай бұрын

I have been in possession of an E-BIKE for a couple of years now and I have been thinking of making a self charging E-Bike, which I am sure in time could be used on all electric vehicles. What do you think of this idea, will it work?????

@SteveNinetyski Ай бұрын

Wangchor

@CourtneyHump 2 ай бұрын

#askgcntech Dear lovers of well maintained drivetrains, most all chain lube instructions say "wipe off excess lube" as the final step in the application process. Does this mean only the outside of the chain (the sides) or does this mean the top/bottom as well (including the rollers). Phrased differently, hug the chain with a rag or pinch it?

@robbikunkle4700 2 ай бұрын

Hug. When the derailleur is adjusted right, the chain makes gear contact on the rollers and sometimes inner plate surfaces. Most of the friction in the drivetrain is internal chain friction. If you thoroughly lube the chain and then very thoroughly hug it with a rag during some zesty backpedals, you leave lube between those pivoting surfaces, where it prevents sticky links, the true sign (along with chirping) of a chain thirsty for lube.

@katopeters9980 2 ай бұрын

#askgcntech Hi Ollie and Alex. Can you provide some guidance on how many times I can repair my Conti Tube Race 28 Inner Tubes after a puncture? I'm using Park Tool GP-2 Pre-Glued Super Patches for the repair. Previously, I'd immediately replace the inner tube with a new one whenever I got a flat. However, with the increasing cost of living, I'm aiming to extend the life of my tubes by repairing them multiple times before resorting to replacement, to save a few bucks on my commuter bike. Also, Ollie have you borrowed Dan's copy of 'Breath: The New Science of a Lost Art' by James Nestor yet, or are you still Mouth Breathing?

@yonglingng5640 2 ай бұрын

I only replace a tube if the puncture is too close to the valve stem's base or any previous puncture patch.

@katopeters9980 Ай бұрын

@@yonglingng5640 So you have lots of patches over the inner tube? What's your record for repairing a single inner tube?

@yonglingng5640 Ай бұрын

@@katopeters9980 I only have two so far, I rarely get punctures, if ever.

@SteveNinetyski Ай бұрын

@@yonglingng5640saddos

@cooperraphael Ай бұрын

GCSE physics - Newton’s second law: F=ma explains why the wider tyres wear slower

@thenobleist9262 2 ай бұрын

#askgcntech do caps impact aero gains at all? Like, if I’m wearing an aero helmet, will putting a cap on negate those gains? What about brim up vs. brim down?

@HoldenDoesBikeStuff 2 ай бұрын

Where can we get the Anti UCI sticker on Big O's Mac? #AskGCNTech

@arne8922 2 ай бұрын

ollie, you'll have to check your units there. no way you exert 2-4.5 pascal, gotta be megapascal or something.

@WilliamKerin 2 ай бұрын

2 Pascals... that's about a 15g car. 200KPa would make more sense

@josephkozachek848 2 ай бұрын

Ok….now I can’t get the image of an elephant wearing stiletto heels out of my mind…

@gcntech 2 ай бұрын

🐘👠

@montrose252 2 ай бұрын

Woah, I ride at around 32 kph!! How do you get up to 35 to 45?? I am a slow geezer!

@GCNalex 2 ай бұрын

32kph is a good average speed!! You are certainly not slow!

@SteveNinetyski Ай бұрын

No one averages 45kph like he says mate...that is peleton race pace average in the pro tour. I was a "pro" 15+ years ago and I was averaging between 30kph & 33kph on most of my training rides when alone.

@Afrikakorps68 2 ай бұрын

The first question is definitely from a paranoid!!!

@SteveNinetyski Ай бұрын

I wouldn't say he is a paranoid...I would say he is a product of what channels like this do to people. Everyone alking about 28mm this 32mm that rolling resistance this chain wax that...just get on your bikes you nobs.

@Frostbiker 2 ай бұрын

It looks like this was shot on the same day as the video about saddles. It sounds like Ollie was feeling under the weather or burdened with something else in his life. I hope he is doing better now.

@SteveNinetyski Ай бұрын

He's just an egotistical nob in my opinion😅

@miguelcpt 2 ай бұрын

Who's Armando?

@jmurphy3350 2 ай бұрын

The only people. And I mean the only people who should be talking about saving 20 or 30g of a valve/ tube/ tyre etc are gc riders in grand tours. Wtf is wrong with people. I know fast guys in my club who bring gravel bikes with them on the fast Sunday morning ride and still beat everyone on 38/40mm tyres. And some of them are fat for cyclists. Ride a comfortable bike and you’ll enjoy it more.

@SteveNinetyski Ай бұрын

Amen...it is painful to see where cycling has gone in the last few years.

@DeeJoseph-jv7ib 2 ай бұрын

Please only replace your tires as "needed" and not for aero.❤❤❤

@tomkunich9401 2 ай бұрын

Just how fast do these people think that they are riding? Do they have any idea how fast they have to ride for there to be any aero advantage?

@stevenkennedy4819 2 ай бұрын

If everything is about aero, why do we never investigate beards! I bet there's a few watts to be gained there. Has anyone ever won a Tdf with face fuzz? I think not! Maybe It's what stands between Ollie and cycling greatness.

@GCNalex 2 ай бұрын

Im certain this has been tested before, but i cannot remember where or the results. But i agree, it could be the ONLY aspect holding Dr Ollie back!

@mvm9407 2 ай бұрын

Now I know why Thomas de Gendt never won the Tour de France.

@MrVizzle 2 ай бұрын

Think about beard as aero fender, disrupting airflow making system more aero. That's how I explain it to myself.

@mb10kx 2 ай бұрын

so 28 mm is narrow nowdays

@Groegselmaschupp 2 ай бұрын

april 1st already😂😂😂😂😂

@evanjohn503 2 ай бұрын

that tyre contact vid can't be done quick enough.... please

@aim-at-me 2 ай бұрын

My elephants wear stilettos and resent your assumptions about modern elephant dress standards.

@onlycoolnameleft 2 ай бұрын

#askgcntech I've had this aero conundrum the other day while going down hill. If I start to pedal I would notice my speed drops a bit. Mind you this is at relatively high speeds 60+ km/h. Is there something to pedalling disrupting the airflow vs simply staying put? I'd assume there's a tipping point in terms of speed where it would cause so much drag that you might begin loosing speed.

@TB41n0 2 ай бұрын

😢

@user-qy8ph8tf3d 2 ай бұрын

You will get way ahead in performance if you spend the Di2 upgrade money on coaching.

@WerdnaLiten 2 ай бұрын

If you're need coaching you're taking it far too seriously.......Just get out and ride your bike.

@user-qy8ph8tf3d 2 ай бұрын

@@WerdnaLiten if you need Di2 your are taking it too seriously. But if you are willing to take it seriously, coaching is going to produce a better outcome

@andrewblakesley4202 2 ай бұрын

Modern cyclists look for every second and watt and are bombarded with data. Some commit the cost of a car to their bike and gear. Do they enjoy cycling more or less than folks who just trained hard, tried for a light bike and went for it? What % people with a bike over £7k are fit enough to justify it in competition?

@SteveNinetyski Ай бұрын

0%. And all perpetuated by nobs like Ollie thinking they're clever. I fell in love with cycling for the purity of it back on the late 90's. Had I been born 20 years later, there is zero chance I would feel the same...it is rather off putting to say the least.

@lifted_above 2 ай бұрын

A lighter tire will rotate and move easier. A narrower tire will cause less drag in the wind. A narrower tire, on the other hand, will require a higher pressure to function. If your surface is super smooth, caring about rough surfaces and bump absorption by going with a wider (and lower pressures) tire isn't a thing.

@Lolwutfordawin 2 ай бұрын

Though unless you live in some sort of fantasy land like the Netherlands or Switzerland, you're probably dealing with broken asphalt, potholes, etc...